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使用PyQt来编写第一个Python GUI程序

匿名 · 更新于 2018/3/3

简介

许多人在学习如何创建一个 GUI 应用的时候都感到十分的困难。其中最重要的原因是，他们不知道应该从何下手。大多数的教程都只有文字，但事实上仅仅依靠文字很难学会 GUI 编程，因为 GUI 应用大多数都是基于视觉上的。

我们将通过创建一个简单的 GUI 应用来避免上面提到的这些问题，并且向你展示着手开始这件事其实是多么的简单。一旦你明白了这些基本的知识，以后的进一步学习将会变得十分的容易。

这就是我们即将完成的东西：

这是一个简单的 GUI 应用，根据输入的价格（price）和税率（tax rate），计算出最终的价格（final price）。

大多数的教程都试图直接通过代码来对 GUI 应用进行布局，但是这样做实在是很费劲。我们将要做的是利用优秀的 QT Designer 工具来对我们的应用进行布局。

所以不要再劳神费力的用代码来设计界面了。现在开始所有的东西都将通过图形界面来搞定。

所有的代码都在这里。

前提条件

如果你已经接受了我的建议并且安装了 Anaconda，你应该已经安装好了 PyQt4。如果没有的话，你需要从这里先下载它。

同时你还需要一个 Qt Designer。我建议你下载整个的 QT 套件，因为其中还包含了许多其他有用的工具。

开始着手

提示：当你需要查看更多细节的时候，你可以通过点击下方的任意图片来查看其原图。（译者注：你可能需要查看原始链接来查看原图）

打开 QT Designer。在弹出的窗口中，选择 Main Window，这样它会给你一个空白的画板。

接下来在左侧选择Text Edit：

将Text Edit 拖动到主窗口：

看见右边我粗略的用红圈框起来的部分了吗？那就是定义这个对象的名字的地方。这个名字将是我们通过 Python 代码调用到这个对象的变量名，所以请尽量取一个有意义的名称。

我将它取名为price_box，因为我们会在这里输入价格。然后我们需要给这个输入框添加一个 label，以便让用户更加清楚这个输入框的作用。

我在上图中圈出了 label。把它拖动到主窗口当中来。

现在它被默认称作TextLabel。双击并将其命名为Price。你还可以将这段文字字体加大并且设置为粗体，就像下边看到的这样：

对于税率（tax）输入框，我们会使用另外的一个东西。找到spin box：

左侧用圈框起来的部分就是一个spin box。它会限定你能输入的值。其实并不是非得要用spin box，这样做只不过是为了更好地展示 QT Creator 所能提供的各种不同的组件。将spin box 拖到窗口中。然后我们要做的第一件事情就是将objectName 改为一个有意义的名字，例如我将其设置为tax_rate。请记住这将会是你在 Python 代码中调用它的时候会使用到的变量名。

我们可以为我们的spin box 设置一个默认值。我选择将其设置为 20：

如果你仔细观察上图，你会发现我们也可以设置它的最小值和最大值。不过我并不打算去更改他们。

同样地，我会为它添加一个标签叫做Tax Rate。然后看看我们接下来会用到的圈起来的Push Button：

好的，现在选择Push Button 然后将其拖动到我们的窗口中来。

这个按钮现在显示的是PushButton，这并不是一个很有意义的名字。到了这一步，你应该知道该怎么更改它了。不过在此之前，我们要把这个按钮的名字（不是显示用的文字列）改为calc_tax_button。

然后，我们可以修改真正的显示文字列了：

然后选择另外一个Text Edit 并将其拖动到窗口中。你不需要给它添加标签，因为我们会把我们的结果输出到这里。把它的名字改为results_window（下图中没有画出来，但你应该已经知道该如何操作了）。

如果你觉得需要的话，你可以添加一个大标题。这是一个简单的label box 并且将字体加大了。

现在保存你的成果：

这个文件在下一部分我们编写代码的时候将会用到，所以最好把它存在一个我们方便访问的地方。

我们创建的只是一个简单的 XML 文件。用任意一个文本编辑器打开它，你可以看到这样的内容：

编写代码

Qt 代码是面向对象的，并且简单易学。所有我们添加的组件都是一个对象，并且都拥有自己的方法比如toPlainText()（用来读取输入框中的值）。这让它使用起来非常方便。

在你编写代码之前，你必须要使用一些函数来进行配置。我确信官方的文档中肯定有提到过这个，但是我现在打死也找不到这些文档了，所以我只能通过官方的例程（以及网上的一些教程）中总结出了这一小段代码来进行配置。我已经把这些函数上传到了 pyqt_skeleton.py。

这些代码非常有用，每当你想要创建一个新的 PyQt 项目的时候，就在这段代码的基础上添加你自己的代码吧。

这段代码如下：

1
		<div class="line number2 index1 alt1" style="margin: 0px !important; padding: 0px 0.5em !important; border-radius: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border-width: 0px 2px 0px 0px !important; border-top-style: initial !important; border-right-style: solid !important; border-bottom-style: initial !important; border-left-style: initial !important; border-top-color: initial !important; border-right-color: rgb(108, 226, 108) !important; border-bottom-color: initial !important; border-left-color: initial !important; border-image: initial !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; text-align: right !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">2</div>

		<div class="line number3 index2 alt2" style="margin: 0px !important; padding: 0px 0.5em !important; border-radius: 0px !important; background: none rgb(244, 244, 244) !important; border-width: 0px 2px 0px 0px !important; border-top-style: initial !important; border-right-style: solid !important; border-bottom-style: initial !important; border-left-style: initial !important; border-top-color: initial !important; border-right-color: rgb(108, 226, 108) !important; border-bottom-color: initial !important; border-left-color: initial !important; border-image: initial !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; text-align: right !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">3</div>

		<div class="line number4 index3 alt1" style="margin: 0px !important; padding: 0px 0.5em !important; border-radius: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border-width: 0px 2px 0px 0px !important; border-top-style: initial !important; border-right-style: solid !important; border-bottom-style: initial !important; border-left-style: initial !important; border-top-color: initial !important; border-right-color: rgb(108, 226, 108) !important; border-bottom-color: initial !important; border-left-color: initial !important; border-image: initial !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; text-align: right !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">4</div>

		<div class="line number5 index4 alt2" style="margin: 0px !important; padding: 0px 0.5em !important; border-radius: 0px !important; background: none rgb(244, 244, 244) !important; border-width: 0px 2px 0px 0px !important; border-top-style: initial !important; border-right-style: solid !important; border-bottom-style: initial !important; border-left-style: initial !important; border-top-color: initial !important; border-right-color: rgb(108, 226, 108) !important; border-bottom-color: initial !important; border-left-color: initial !important; border-image: initial !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; text-align: right !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">5</div>

		<div class="line number6 index5 alt1" style="margin: 0px !important; padding: 0px 0.5em !important; border-radius: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border-width: 0px 2px 0px 0px !important; border-top-style: initial !important; border-right-style: solid !important; border-bottom-style: initial !important; border-left-style: initial !important; border-top-color: initial !important; border-right-color: rgb(108, 226, 108) !important; border-bottom-color: initial !important; border-left-color: initial !important; border-image: initial !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; text-align: right !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">6</div>

		<div class="line number7 index6 alt2" style="margin: 0px !important; padding: 0px 0.5em !important; border-radius: 0px !important; background: none rgb(244, 244, 244) !important; border-width: 0px 2px 0px 0px !important; border-top-style: initial !important; border-right-style: solid !important; border-bottom-style: initial !important; border-left-style: initial !important; border-top-color: initial !important; border-right-color: rgb(108, 226, 108) !important; border-bottom-color: initial !important; border-left-color: initial !important; border-image: initial !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; text-align: right !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">7</div>

		<div class="line number8 index7 alt1" style="margin: 0px !important; padding: 0px 0.5em !important; border-radius: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border-width: 0px 2px 0px 0px !important; border-top-style: initial !important; border-right-style: solid !important; border-bottom-style: initial !important; border-left-style: initial !important; border-top-color: initial !important; border-right-color: rgb(108, 226, 108) !important; border-bottom-color: initial !important; border-left-color: initial !important; border-image: initial !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; text-align: right !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">8</div>

		<div class="line number9 index8 alt2" style="margin: 0px !important; padding: 0px 0.5em !important; border-radius: 0px !important; background: none rgb(244, 244, 244) !important; border-width: 0px 2px 0px 0px !important; border-top-style: initial !important; border-right-style: solid !important; border-bottom-style: initial !important; border-left-style: initial !important; border-top-color: initial !important; border-right-color: rgb(108, 226, 108) !important; border-bottom-color: initial !important; border-left-color: initial !important; border-image: initial !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; text-align: right !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">9</div>

		<div class="line number10 index9 alt1" style="margin: 0px !important; padding: 0px 0.5em !important; border-radius: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border-width: 0px 2px 0px 0px !important; border-top-style: initial !important; border-right-style: solid !important; border-bottom-style: initial !important; border-left-style: initial !important; border-top-color: initial !important; border-right-color: rgb(108, 226, 108) !important; border-bottom-color: initial !important; border-left-color: initial !important; border-image: initial !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; text-align: right !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">10</div>

		<div class="line number11 index10 alt2" style="margin: 0px !important; padding: 0px 0.5em !important; border-radius: 0px !important; background: none rgb(244, 244, 244) !important; border-width: 0px 2px 0px 0px !important; border-top-style: initial !important; border-right-style: solid !important; border-bottom-style: initial !important; border-left-style: initial !important; border-top-color: initial !important; border-right-color: rgb(108, 226, 108) !important; border-bottom-color: initial !important; border-left-color: initial !important; border-image: initial !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; text-align: right !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">11</div>

		<div class="line number12 index11 alt1" style="margin: 0px !important; padding: 0px 0.5em !important; border-radius: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border-width: 0px 2px 0px 0px !important; border-top-style: initial !important; border-right-style: solid !important; border-bottom-style: initial !important; border-left-style: initial !important; border-top-color: initial !important; border-right-color: rgb(108, 226, 108) !important; border-bottom-color: initial !important; border-left-color: initial !important; border-image: initial !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; text-align: right !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">12</div>

		<div class="line number13 index12 alt2" style="margin: 0px !important; padding: 0px 0.5em !important; border-radius: 0px !important; background: none rgb(244, 244, 244) !important; border-width: 0px 2px 0px 0px !important; border-top-style: initial !important; border-right-style: solid !important; border-bottom-style: initial !important; border-left-style: initial !important; border-top-color: initial !important; border-right-color: rgb(108, 226, 108) !important; border-bottom-color: initial !important; border-left-color: initial !important; border-image: initial !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; text-align: right !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">13</div>

		<div class="line number14 index13 alt1" style="margin: 0px !important; padding: 0px 0.5em !important; border-radius: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border-width: 0px 2px 0px 0px !important; border-top-style: initial !important; border-right-style: solid !important; border-bottom-style: initial !important; border-left-style: initial !important; border-top-color: initial !important; border-right-color: rgb(108, 226, 108) !important; border-bottom-color: initial !important; border-left-color: initial !important; border-image: initial !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; text-align: right !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">14</div>

		<div class="line number15 index14 alt2" style="margin: 0px !important; padding: 0px 0.5em !important; border-radius: 0px !important; background: none rgb(244, 244, 244) !important; border-width: 0px 2px 0px 0px !important; border-top-style: initial !important; border-right-style: solid !important; border-bottom-style: initial !important; border-left-style: initial !important; border-top-color: initial !important; border-right-color: rgb(108, 226, 108) !important; border-bottom-color: initial !important; border-left-color: initial !important; border-image: initial !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; text-align: right !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">15</div>

		<div class="line number16 index15 alt1" style="margin: 0px !important; padding: 0px 0.5em !important; border-radius: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border-width: 0px 2px 0px 0px !important; border-top-style: initial !important; border-right-style: solid !important; border-bottom-style: initial !important; border-left-style: initial !important; border-top-color: initial !important; border-right-color: rgb(108, 226, 108) !important; border-bottom-color: initial !important; border-left-color: initial !important; border-image: initial !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; text-align: right !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">16</div>

		<div class="line number17 index16 alt2" style="margin: 0px !important; padding: 0px 0.5em !important; border-radius: 0px !important; background: none rgb(244, 244, 244) !important; border-width: 0px 2px 0px 0px !important; border-top-style: initial !important; border-right-style: solid !important; border-bottom-style: initial !important; border-left-style: initial !important; border-top-color: initial !important; border-right-color: rgb(108, 226, 108) !important; border-bottom-color: initial !important; border-left-color: initial !important; border-image: initial !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; text-align: right !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">17</div>

		<div class="line number18 index17 alt1" style="margin: 0px !important; padding: 0px 0.5em !important; border-radius: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border-width: 0px 2px 0px 0px !important; border-top-style: initial !important; border-right-style: solid !important; border-bottom-style: initial !important; border-left-style: initial !important; border-top-color: initial !important; border-right-color: rgb(108, 226, 108) !important; border-bottom-color: initial !important; border-left-color: initial !important; border-image: initial !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; text-align: right !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">18</div>
		</td>
		<td class="code" style="padding: 3px; border: 1px solid silver; border-collapse: collapse; margin: 0px !important; border-radius: 0px !important; background: none !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.1em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">
		<div class="container" style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.1em !important; outline: 0px !important; overflow: visible !important; position: relative !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">
		<div class="line number1 index0 alt2" style="margin: 0px !important; padding: 0px 1em !important; border-radius: 0px !important; background: none rgb(244, 244, 244) !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;"><code class="python keyword" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important; color: rgb(0, 0, 255) !important;">import</code>&nbsp;<code class="python plain" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">sys</code></div>

		<div class="line number2 index1 alt1" style="margin: 0px !important; padding: 0px 1em !important; border-radius: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;"><code class="python keyword" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important; color: rgb(0, 0, 255) !important;">from</code>&nbsp;<code class="python plain" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">PyQt4 </code><code class="python keyword" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important; color: rgb(0, 0, 255) !important;">import</code>&nbsp;<code class="python plain" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">QtCore, QtGui, uic</code></div>

		<div class="line number3 index2 alt2" style="margin: 0px !important; padding: 0px 1em !important; border-radius: 0px !important; background: none rgb(244, 244, 244) !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">&nbsp;</div>

		<div class="line number4 index3 alt1" style="margin: 0px !important; padding: 0px 1em !important; border-radius: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;"><code class="python plain" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">qtCreatorFile </code><code class="python keyword" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important; color: rgb(0, 0, 255) !important;">=</code>&nbsp;<code class="python plain" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">&quot;&quot; </code><code class="python comments" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important; color: rgb(0, 130, 0) !important;"># Enter file here.</code></div>

		<div class="line number5 index4 alt2" style="margin: 0px !important; padding: 0px 1em !important; border-radius: 0px !important; background: none rgb(244, 244, 244) !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">&nbsp;</div>

		<div class="line number6 index5 alt1" style="margin: 0px !important; padding: 0px 1em !important; border-radius: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;"><code class="python plain" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">Ui_MainWindow, QtBaseClass </code><code class="python keyword" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important; color: rgb(0, 0, 255) !important;">=</code>&nbsp;<code class="python plain" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">uic.loadUiType(qtCreatorFile)</code></div>

		<div class="line number7 index6 alt2" style="margin: 0px !important; padding: 0px 1em !important; border-radius: 0px !important; background: none rgb(244, 244, 244) !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">&nbsp;</div>

		<div class="line number8 index7 alt1" style="margin: 0px !important; padding: 0px 1em !important; border-radius: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;"><code class="python keyword" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important; color: rgb(0, 0, 255) !important;">class</code>&nbsp;<code class="python plain" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">MyApp(QtGui.QMainWindow, Ui_MainWindow):</code></div>

		<div class="line number9 index8 alt2" style="margin: 0px !important; padding: 0px 1em !important; border-radius: 0px !important; background: none rgb(244, 244, 244) !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;"><code class="python spaces" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">&nbsp;&nbsp;&nbsp;&nbsp;</code><code class="python keyword" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important; color: rgb(0, 0, 255) !important;">def</code>&nbsp;<code class="python plain" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">__init__(</code><code class="python color1" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important; color: gray !important;">self</code><code class="python plain" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">):</code></div>

		<div class="line number10 index9 alt1" style="margin: 0px !important; padding: 0px 1em !important; border-radius: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;"><code class="python spaces" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</code><code class="python plain" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">QtGui.QMainWindow.__init__(</code><code class="python color1" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important; color: gray !important;">self</code><code class="python plain" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">)</code></div>

		<div class="line number11 index10 alt2" style="margin: 0px !important; padding: 0px 1em !important; border-radius: 0px !important; background: none rgb(244, 244, 244) !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;"><code class="python spaces" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</code><code class="python plain" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">Ui_MainWindow.__init__(</code><code class="python color1" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important; color: gray !important;">self</code><code class="python plain" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">)</code></div>

		<div class="line number12 index11 alt1" style="margin: 0px !important; padding: 0px 1em !important; border-radius: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;"><code class="python spaces" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</code><code class="python color1" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important; color: gray !important;">self</code><code class="python plain" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">.setupUi(</code><code class="python color1" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important; color: gray !important;">self</code><code class="python plain" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">)</code></div>

		<div class="line number13 index12 alt2" style="margin: 0px !important; padding: 0px 1em !important; border-radius: 0px !important; background: none rgb(244, 244, 244) !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">&nbsp;</div>

		<div class="line number14 index13 alt1" style="margin: 0px !important; padding: 0px 1em !important; border-radius: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;"><code class="python keyword" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important; color: rgb(0, 0, 255) !important;">if</code>&nbsp;<code class="python plain" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">__name__ </code><code class="python keyword" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important; color: rgb(0, 0, 255) !important;">=</code><code class="python keyword" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important; color: rgb(0, 0, 255) !important;">=</code>&nbsp;<code class="python string" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important; color: blue !important;">&quot;__main__&quot;</code><code class="python plain" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">:</code></div>

		<div class="line number15 index14 alt2" style="margin: 0px !important; padding: 0px 1em !important; border-radius: 0px !important; background: none rgb(244, 244, 244) !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;"><code class="python spaces" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">&nbsp;&nbsp;&nbsp;&nbsp;</code><code class="python plain" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">app </code><code class="python keyword" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important; color: rgb(0, 0, 255) !important;">=</code>&nbsp;<code class="python plain" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">QtGui.QApplication(sys.argv)</code></div>

		<div class="line number16 index15 alt1" style="margin: 0px !important; padding: 0px 1em !important; border-radius: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;"><code class="python spaces" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">&nbsp;&nbsp;&nbsp;&nbsp;</code><code class="python plain" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">window </code><code class="python keyword" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important; color: rgb(0, 0, 255) !important;">=</code>&nbsp;<code class="python plain" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">MyApp()</code></div>

		<div class="line number17 index16 alt2" style="margin: 0px !important; padding: 0px 1em !important; border-radius: 0px !important; background: none rgb(244, 244, 244) !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;"><code class="python spaces" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">&nbsp;&nbsp;&nbsp;&nbsp;</code><code class="python plain" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">window.show()</code></div>

		<div class="line number18 index17 alt1" style="margin: 0px !important; padding: 0px 1em !important; border-radius: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;"><code class="python spaces" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">&nbsp;&nbsp;&nbsp;&nbsp;</code><code class="python plain" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">sys.exit(app.exec_())</code></div>
		</div>
		</td>
	</tr>
</tbody>

其中需要注意的是第三行：

1
qtCreatorFile = "" # Enter file here.

你需要在这里填入你先前创建的文件的地址。这个文件将会被内置的函数载入:

1
Ui_MainWindow, QtBaseClass = uic.loadUiType(qtCreatorFile)

让我们大致地看一看这段代码：

1
		<div class="line number2 index1 alt1" style="margin: 0px !important; padding: 0px 0.5em !important; border-radius: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border-width: 0px 2px 0px 0px !important; border-top-style: initial !important; border-right-style: solid !important; border-bottom-style: initial !important; border-left-style: initial !important; border-top-color: initial !important; border-right-color: rgb(108, 226, 108) !important; border-bottom-color: initial !important; border-left-color: initial !important; border-image: initial !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; text-align: right !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">2</div>

		<div class="line number3 index2 alt2" style="margin: 0px !important; padding: 0px 0.5em !important; border-radius: 0px !important; background: none rgb(244, 244, 244) !important; border-width: 0px 2px 0px 0px !important; border-top-style: initial !important; border-right-style: solid !important; border-bottom-style: initial !important; border-left-style: initial !important; border-top-color: initial !important; border-right-color: rgb(108, 226, 108) !important; border-bottom-color: initial !important; border-left-color: initial !important; border-image: initial !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; text-align: right !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">3</div>

		<div class="line number4 index3 alt1" style="margin: 0px !important; padding: 0px 0.5em !important; border-radius: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border-width: 0px 2px 0px 0px !important; border-top-style: initial !important; border-right-style: solid !important; border-bottom-style: initial !important; border-left-style: initial !important; border-top-color: initial !important; border-right-color: rgb(108, 226, 108) !important; border-bottom-color: initial !important; border-left-color: initial !important; border-image: initial !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; text-align: right !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">4</div>

		<div class="line number5 index4 alt2" style="margin: 0px !important; padding: 0px 0.5em !important; border-radius: 0px !important; background: none rgb(244, 244, 244) !important; border-width: 0px 2px 0px 0px !important; border-top-style: initial !important; border-right-style: solid !important; border-bottom-style: initial !important; border-left-style: initial !important; border-top-color: initial !important; border-right-color: rgb(108, 226, 108) !important; border-bottom-color: initial !important; border-left-color: initial !important; border-image: initial !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; text-align: right !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">5</div>
		</td>
		<td class="code" style="padding: 3px; border: 1px solid silver; border-collapse: collapse; margin: 0px !important; border-radius: 0px !important; background: none !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.1em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">
		<div class="container" style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.1em !important; outline: 0px !important; overflow: visible !important; position: relative !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">
		<div class="line number1 index0 alt2" style="margin: 0px !important; padding: 0px 1em !important; border-radius: 0px !important; background: none rgb(244, 244, 244) !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;"><code class="python keyword" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important; color: rgb(0, 0, 255) !important;">if</code>&nbsp;<code class="python plain" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">__name__ </code><code class="python keyword" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important; color: rgb(0, 0, 255) !important;">=</code><code class="python keyword" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important; color: rgb(0, 0, 255) !important;">=</code>&nbsp;<code class="python string" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important; color: blue !important;">&quot;__main__&quot;</code><code class="python plain" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">:</code></div>

		<div class="line number2 index1 alt1" style="margin: 0px !important; padding: 0px 1em !important; border-radius: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;"><code class="python spaces" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">&nbsp;&nbsp;&nbsp;&nbsp;</code><code class="python plain" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">app </code><code class="python keyword" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important; color: rgb(0, 0, 255) !important;">=</code>&nbsp;<code class="python plain" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">QtGui.QApplication(sys.argv)</code></div>

		<div class="line number3 index2 alt2" style="margin: 0px !important; padding: 0px 1em !important; border-radius: 0px !important; background: none rgb(244, 244, 244) !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;"><code class="python spaces" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">&nbsp;&nbsp;&nbsp;&nbsp;</code><code class="python plain" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">window </code><code class="python keyword" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important; color: rgb(0, 0, 255) !important;">=</code>&nbsp;<code class="python plain" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">MyApp()</code></div>

		<div class="line number4 index3 alt1" style="margin: 0px !important; padding: 0px 1em !important; border-radius: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;"><code class="python spaces" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">&nbsp;&nbsp;&nbsp;&nbsp;</code><code class="python plain" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">window.show()</code></div>

		<div class="line number5 index4 alt2" style="margin: 0px !important; padding: 0px 1em !important; border-radius: 0px !important; background: none rgb(244, 244, 244) !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;"><code class="python spaces" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">&nbsp;&nbsp;&nbsp;&nbsp;</code><code class="python plain" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">sys.exit(app.exec_())</code></div>
		</div>
		</td>
	</tr>
</tbody>

这段主程序创建了一个新的 Qt Gui 应用。，每个 QT 应用都可以通过命令行进行配置，所以必须传入sys.argv 参数。不过现在我们用不到这个。最后，我们创建了一个MyApp 类，这个类继承于 Qt 库并且调用了父类的初始化函数：

1
		<div class="line number2 index1 alt1" style="margin: 0px !important; padding: 0px 0.5em !important; border-radius: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border-width: 0px 2px 0px 0px !important; border-top-style: initial !important; border-right-style: solid !important; border-bottom-style: initial !important; border-left-style: initial !important; border-top-color: initial !important; border-right-color: rgb(108, 226, 108) !important; border-bottom-color: initial !important; border-left-color: initial !important; border-image: initial !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; text-align: right !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">2</div>

		<div class="line number3 index2 alt2" style="margin: 0px !important; padding: 0px 0.5em !important; border-radius: 0px !important; background: none rgb(244, 244, 244) !important; border-width: 0px 2px 0px 0px !important; border-top-style: initial !important; border-right-style: solid !important; border-bottom-style: initial !important; border-left-style: initial !important; border-top-color: initial !important; border-right-color: rgb(108, 226, 108) !important; border-bottom-color: initial !important; border-left-color: initial !important; border-image: initial !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; text-align: right !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">3</div>

		<div class="line number4 index3 alt1" style="margin: 0px !important; padding: 0px 0.5em !important; border-radius: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border-width: 0px 2px 0px 0px !important; border-top-style: initial !important; border-right-style: solid !important; border-bottom-style: initial !important; border-left-style: initial !important; border-top-color: initial !important; border-right-color: rgb(108, 226, 108) !important; border-bottom-color: initial !important; border-left-color: initial !important; border-image: initial !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; text-align: right !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">4</div>

		<div class="line number5 index4 alt2" style="margin: 0px !important; padding: 0px 0.5em !important; border-radius: 0px !important; background: none rgb(244, 244, 244) !important; border-width: 0px 2px 0px 0px !important; border-top-style: initial !important; border-right-style: solid !important; border-bottom-style: initial !important; border-left-style: initial !important; border-top-color: initial !important; border-right-color: rgb(108, 226, 108) !important; border-bottom-color: initial !important; border-left-color: initial !important; border-image: initial !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; text-align: right !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">5</div>
		</td>
		<td class="code" style="padding: 3px; border: 1px solid silver; border-collapse: collapse; margin: 0px !important; border-radius: 0px !important; background: none !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.1em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">
		<div class="container" style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.1em !important; outline: 0px !important; overflow: visible !important; position: relative !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">
		<div class="line number1 index0 alt2" style="margin: 0px !important; padding: 0px 1em !important; border-radius: 0px !important; background: none rgb(244, 244, 244) !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;"><code class="python keyword" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important; color: rgb(0, 0, 255) !important;">class</code>&nbsp;<code class="python plain" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">MyApp(QtGui.QMainWindow, Ui_MainWindow):</code></div>

		<div class="line number2 index1 alt1" style="margin: 0px !important; padding: 0px 1em !important; border-radius: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;"><code class="python spaces" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">&nbsp;&nbsp;&nbsp;&nbsp;</code><code class="python keyword" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important; color: rgb(0, 0, 255) !important;">def</code>&nbsp;<code class="python plain" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">__init__(</code><code class="python color1" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important; color: gray !important;">self</code><code class="python plain" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">):</code></div>

		<div class="line number3 index2 alt2" style="margin: 0px !important; padding: 0px 1em !important; border-radius: 0px !important; background: none rgb(244, 244, 244) !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;"><code class="python spaces" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</code><code class="python plain" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">QtGui.QMainWindow.__init__(</code><code class="python color1" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important; color: gray !important;">self</code><code class="python plain" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">)</code></div>

		<div class="line number4 index3 alt1" style="margin: 0px !important; padding: 0px 1em !important; border-radius: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;"><code class="python spaces" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</code><code class="python plain" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">Ui_MainWindow.__init__(</code><code class="python color1" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important; color: gray !important;">self</code><code class="python plain" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">)</code></div>

		<div class="line number5 index4 alt2" style="margin: 0px !important; padding: 0px 1em !important; border-radius: 0px !important; background: none rgb(244, 244, 244) !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;"><code class="python spaces" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</code><code class="python color1" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important; color: gray !important;">self</code><code class="python plain" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">.setupUi(</code><code class="python color1" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important; color: gray !important;">self</code><code class="python plain" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">)</code></div>
		</div>
		</td>
	</tr>
</tbody>

你不一定非得要了解这些代码的细节。你只需要在它的基础上继续开发就好了。

下载pyqt_skeleton.py 这个文件，并将它重命名为pyqt_first.py。这是因为我们不想去改动到源文件。然后要做的第一件事就是在代码中导入我们自己的 XML 文件，这个 XML 文件包含了我们的这个 GUI 信息。将下面的这一行：

1
qtCreatorFile = "" # Enter file here.

替换为

1
qtCreatorFile =  "tax_calc.ui"

这样就能把我们的 GUI 文件载入到内存中。现在，我们的 GUI 中最关键的组件就是我们的这个按钮了。一旦我们按下这个按钮，就会发生一些神奇的事情。到底会发生什么？这就需要我们告诉代码当按下Calculate Tax 按钮的时候该怎么做了。在__init__ 函数中，添加如下的内容：

1
self.calc_tax_button.clicked.connect(self.CalculateTax)

这段代码有什么用？还记得我们把按钮命名为了calc_tax_button 吗？（这是这个按钮对象的名字，不是按钮上显示的提示字符串。）clicked 是一个内置的函数，当有按钮被点击的时候它会被自动调用（很神奇吧）。所有的 QT 组件都有特定的函数，你可以通过 Google 来查看详细。这段代码的最后部分是connect(self.CalculateTax)。这意味着这个按钮会被链接到一个叫做self.CalculateTax 的函数，这样以后每当用户按下这个按钮的时候，这段代码都会被调用。

我们还没有实现这个函数。所以让我们动手开始写吧。

在MyApp 类中，添加另外一个函数。我们需要先看看整个函数，然后再去了解它的细节：

1
		<div class="line number2 index1 alt1" style="margin: 0px !important; padding: 0px 0.5em !important; border-radius: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border-width: 0px 2px 0px 0px !important; border-top-style: initial !important; border-right-style: solid !important; border-bottom-style: initial !important; border-left-style: initial !important; border-top-color: initial !important; border-right-color: rgb(108, 226, 108) !important; border-bottom-color: initial !important; border-left-color: initial !important; border-image: initial !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; text-align: right !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">2</div>

		<div class="line number3 index2 alt2" style="margin: 0px !important; padding: 0px 0.5em !important; border-radius: 0px !important; background: none rgb(244, 244, 244) !important; border-width: 0px 2px 0px 0px !important; border-top-style: initial !important; border-right-style: solid !important; border-bottom-style: initial !important; border-left-style: initial !important; border-top-color: initial !important; border-right-color: rgb(108, 226, 108) !important; border-bottom-color: initial !important; border-left-color: initial !important; border-image: initial !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; text-align: right !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">3</div>

		<div class="line number4 index3 alt1" style="margin: 0px !important; padding: 0px 0.5em !important; border-radius: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border-width: 0px 2px 0px 0px !important; border-top-style: initial !important; border-right-style: solid !important; border-bottom-style: initial !important; border-left-style: initial !important; border-top-color: initial !important; border-right-color: rgb(108, 226, 108) !important; border-bottom-color: initial !important; border-left-color: initial !important; border-image: initial !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; text-align: right !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">4</div>

		<div class="line number5 index4 alt2" style="margin: 0px !important; padding: 0px 0.5em !important; border-radius: 0px !important; background: none rgb(244, 244, 244) !important; border-width: 0px 2px 0px 0px !important; border-top-style: initial !important; border-right-style: solid !important; border-bottom-style: initial !important; border-left-style: initial !important; border-top-color: initial !important; border-right-color: rgb(108, 226, 108) !important; border-bottom-color: initial !important; border-left-color: initial !important; border-image: initial !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; text-align: right !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">5</div>

		<div class="line number6 index5 alt1" style="margin: 0px !important; padding: 0px 0.5em !important; border-radius: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border-width: 0px 2px 0px 0px !important; border-top-style: initial !important; border-right-style: solid !important; border-bottom-style: initial !important; border-left-style: initial !important; border-top-color: initial !important; border-right-color: rgb(108, 226, 108) !important; border-bottom-color: initial !important; border-left-color: initial !important; border-image: initial !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; text-align: right !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">6</div>
		</td>
		<td class="code" style="padding: 3px; border: 1px solid silver; border-collapse: collapse; margin: 0px !important; border-radius: 0px !important; background: none !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.1em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">
		<div class="container" style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.1em !important; outline: 0px !important; overflow: visible !important; position: relative !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">
		<div class="line number1 index0 alt2" style="margin: 0px !important; padding: 0px 1em !important; border-radius: 0px !important; background: none rgb(244, 244, 244) !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;"><code class="python keyword" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important; color: rgb(0, 0, 255) !important;">def</code>&nbsp;<code class="python plain" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">CalculateTax(</code><code class="python color1" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important; color: gray !important;">self</code><code class="python plain" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">):</code></div>

		<div class="line number2 index1 alt1" style="margin: 0px !important; padding: 0px 1em !important; border-radius: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;"><code class="python spaces" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</code><code class="python plain" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">price </code><code class="python keyword" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important; color: rgb(0, 0, 255) !important;">=</code>&nbsp;<code class="python functions" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important; color: rgb(255, 20, 147) !important;">int</code><code class="python plain" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">(</code><code class="python color1" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important; color: gray !important;">self</code><code class="python plain" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">.price_box.toPlainText())</code></div>

		<div class="line number3 index2 alt2" style="margin: 0px !important; padding: 0px 1em !important; border-radius: 0px !important; background: none rgb(244, 244, 244) !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;"><code class="python spaces" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</code><code class="python plain" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">tax </code><code class="python keyword" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important; color: rgb(0, 0, 255) !important;">=</code>&nbsp;<code class="python plain" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">(</code><code class="python color1" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important; color: gray !important;">self</code><code class="python plain" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">.tax_rate.value())</code></div>

		<div class="line number4 index3 alt1" style="margin: 0px !important; padding: 0px 1em !important; border-radius: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;"><code class="python spaces" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</code><code class="python plain" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">total_price </code><code class="python keyword" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important; color: rgb(0, 0, 255) !important;">=</code>&nbsp;<code class="python plain" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">price&nbsp; </code><code class="python keyword" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important; color: rgb(0, 0, 255) !important;">+</code>&nbsp;<code class="python plain" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">((tax </code><code class="python keyword" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important; color: rgb(0, 0, 255) !important;">/</code>&nbsp;<code class="python value" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important; color: rgb(0, 153, 0) !important;">100</code><code class="python plain" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">) </code><code class="python keyword" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important; color: rgb(0, 0, 255) !important;">*</code>&nbsp;<code class="python plain" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">price)</code></div>

		<div class="line number5 index4 alt2" style="margin: 0px !important; padding: 0px 1em !important; border-radius: 0px !important; background: none rgb(244, 244, 244) !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;"><code class="python spaces" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</code><code class="python plain" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">total_price_string </code><code class="python keyword" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important; color: rgb(0, 0, 255) !important;">=</code>&nbsp;<code class="python string" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important; color: blue !important;">&quot;The total price with tax is: &quot;</code>&nbsp;<code class="python keyword" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important; color: rgb(0, 0, 255) !important;">+</code>&nbsp;<code class="python functions" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important; color: rgb(255, 20, 147) !important;">str</code><code class="python plain" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">(total_price)</code></div>

		<div class="line number6 index5 alt1" style="margin: 0px !important; padding: 0px 1em !important; border-radius: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;"><code class="python spaces" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</code><code class="python color1" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important; color: gray !important;">self</code><code class="python plain" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">.results_window.setText(total_price_string)</code></div>
		</div>
		</td>
	</tr>
</tbody>

好了，让我们一行一行的分析上面的代码。

我们现在要做两件事：读取价格和税率，然后计算最终的价格。好了开始吧。请记住，我们要通过我们设定的名字来调用这些组件（这就是我让你不要用默认的通用名称比如box1 的原因，否则的话我们在写代码的时候会很恼火）。

1
price = int(self.price_box.toPlainText())

price_box.toPlainText() 是一个内置的可以读取输入框中的值的函数。顺便提一句，虽然你用得多了以后肯定能记住这些函数，因为他们的名字取得很规范，但是你没必要一开始就去记忆所有这些函数。我每次都是通过 Google 诸如 “Qt Textbox 读取数据”一类的关键字来找到我所需要的函数。

通过函数读取到的是一个 string 类型的值，所以我们需要把他转换成 integer 类型并存在一个price变量中。

然后读取税率：

1
tax = (self.tax_rate.value())

同样的，value() 是读取spinbox 中值的函数。感谢 Google。

我们现在已经得到了以上两个值，这样我们就能用非常高大上的数学公式来计算我们的最终价格了：

1
		<div class="line number2 index1 alt1" style="margin: 0px !important; padding: 0px 0.5em !important; border-radius: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border-width: 0px 2px 0px 0px !important; border-top-style: initial !important; border-right-style: solid !important; border-bottom-style: initial !important; border-left-style: initial !important; border-top-color: initial !important; border-right-color: rgb(108, 226, 108) !important; border-bottom-color: initial !important; border-left-color: initial !important; border-image: initial !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; text-align: right !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">2</div>
		</td>
		<td class="code" style="padding: 3px; border: 1px solid silver; border-collapse: collapse; margin: 0px !important; border-radius: 0px !important; background: none !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.1em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">
		<div class="container" style="margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.1em !important; outline: 0px !important; overflow: visible !important; position: relative !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;">
		<div class="line number1 index0 alt2" style="margin: 0px !important; padding: 0px 1em !important; border-radius: 0px !important; background: none rgb(244, 244, 244) !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;"><code class="python plain" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">total_price </code><code class="python keyword" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important; color: rgb(0, 0, 255) !important;">=</code>&nbsp;<code class="python plain" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">price&nbsp; </code><code class="python keyword" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important; color: rgb(0, 0, 255) !important;">+</code>&nbsp;<code class="python plain" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">((tax </code><code class="python keyword" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important; color: rgb(0, 0, 255) !important;">/</code>&nbsp;<code class="python value" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important; color: rgb(0, 153, 0) !important;">100</code><code class="python plain" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">) </code><code class="python keyword" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important; color: rgb(0, 0, 255) !important;">*</code>&nbsp;<code class="python plain" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">price)</code></div>

		<div class="line number2 index1 alt1" style="margin: 0px !important; padding: 0px 1em !important; border-radius: 0px !important; background-image: none !important; background-position: initial !important; background-size: initial !important; background-repeat: initial !important; background-attachment: initial !important; background-origin: initial !important; background-clip: initial !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: auto !important;"><code class="python plain" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">total_price_string </code><code class="python keyword" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important; color: rgb(0, 0, 255) !important;">=</code>&nbsp;<code class="python string" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important; color: blue !important;">&quot;The total price with tax is: &quot;</code>&nbsp;<code class="python keyword" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important; color: rgb(0, 0, 255) !important;">+</code>&nbsp;<code class="python functions" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important; color: rgb(255, 20, 147) !important;">str</code><code class="python plain" style="white-space: pre-wrap; margin: 0px !important; padding: 0px !important; border-radius: 0px !important; background: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; outline: 0px !important; overflow: visible !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-family: Consolas, &quot;Bitstream Vera Sans Mono&quot;, &quot;Courier New&quot;, Courier, monospace !important; min-height: auto !important;">(total_price)</code></div>
		</div>
		</td>
	</tr>
</tbody>

我们新建了一个 string 变量来储存我们的最终价格。因为最终直接显示在应用上的将会是一个 string 类型的值：

1
self.results_window.setText(total_price_string)

在results_window 中，我们调用了setText() 函数，它能显示我们计算出的最终价格的字符串。

最后运行我们写好的程序：

1
python pyqt_first.py

好了，这就是一个简单的 PyQt 教程。

如果你还想要体验更多好玩儿的东西，你可以试着用一用别的组件，不过先提醒一句，你要是放了太多的组件在你的应用中的话，用起来可能会有点费劲…